Means for feeding webs from printed rolls



% Aug. 27, 1940. A. J. HORTON 2,212,812

MEANS FOR FEEDING WEBS FROM PRINTED ROLLS Filed Dec. 31, 1935 3Sheets-Sheet 1 Aug. 27, 1940. A. J. HORTON 2,212,812

MEANS FOR FEEDING WEBS FROM PRINTED ROLLS I Filed D80. 31, 1935 3Sheets-Sheet 2 Aug. 27, 1940.

A. J. HORTON MEANS FOR FEEDING WEBS FROM PRINTED ROLLS ,3 Sheets-Sheet 5Filed Dec. 31.,H1935 Patented Aug. 27, 1940 UNITED STATES PATENT OFFICEAlbert J. Horton, White Plains, N. Y., assignor to B. Hoe & 00., Inc.,New York, N. Y., a corporation of New York Application December 31,1935, Serial No. 56,857

22 Claims. (01. 242-58) This invention relates to printing machines andmore particularly to a web roll supply mechanism for use with a printingmachine, to which a previously printed web is fed, and it is desired toreplace an expiring web roll with a replacement roll withoutdecelerating the machine. The chief application of this device is inconnection with multi-unit web printing machines printing newspapers, orlike products wherein it is dem sired to insert a previously printedweb, that may be in color, (which necessarily is printed at slowerspeed), in assembly with the product, or products, being printed by themachine. The means for controlling the feed of the printed web so as toassociate it with the webs being printed, in proper relation thereto,may be ac complished by the use of known mechanism. It is particularlydesirable that the printed impressions on the web of the replacementroll are in register with those on the running web of the expiring webroll at the time a join is made between the webs. This inventioncontemplates the provision of means in combination with the web joiningmechanism of a printing machine whereby the above results will beobtained, and which is operable to move one web relatively to the otherto bring the printed impressions thereon into register before a join ismade.

The principal object of this invention is to provide means in a printingmachine to join the previously printed web of a replacement roll and arunning web together with the printed impressions thereof in register. 7Another object .is to provide means in a web supply mechanism to insurethat the printed impressions on the web of a .replacement roll are inregister with the printed impressions on a running web before the webjoin mechanism is. op-

erated to join the same.

Still another object is to provide means for indicating that the printedimpressions on the web of a replacement roll are in register with theprinted impressions on a running web, and

4 that, therefore, a web join may be completed by the operator of themachine.

,A further object is to provide mechanism' for compensating forvariations in the register of printed impressions on the web of areplacement roll and on a runningweb, before the same are joinedtbgethen't'obring the same into register.

-- It is also an object of this invention to provide a web roll supplymechanism of generally improved construction, whereby the device will besimple, durable and inexpensive in construction,

as well as convenient, practical, serviceable and emcient in its use.

With the foregoing and other objects in view. which will appear as thedescription proceeds, the invention resides in the combination and 5arrangement of parts, and in the details of construction hereinafterdescribed and claimed.

The preferred embodiment of the invention is iillustrated in theaccompanying drawings, where- Figure 1 is avlew of an improved websupply mechanism for a printing machine and embodying the features ofthis invention, and wherein means is provided to indicate the registerof the impressions on the webs whereby they may be joined together withthe same substantially in register;

Figure 2 is a view of a mechanism, somewhat diagrammaticallyillustrated, embodying the features of this invention, wherebyvariations in the register of printed impressions on the web of thereplacement roll and on the running web may be compensated for;

Figure 3 is a diagram of the electrical circuits and controls for themechanism shown in Figure 2;

Figure 3A is a diagram of the electrical circuits and controls for anautomatic operation of part of the mechanism;

Figure 4 is a view of a somewhat modified form of mechanism forindicating that the printed impressions on the webs are in register; and

Figure 5 is a view of a web replacement roll prepared to have its webJoined to another web according to the arrangement shown in Figure 4. 35

The web supply mechanism selected to illustrate the features of thisinvention, is one particularly adapted for use withh sh speed types ofprinting machines, and includes web joining mechanism especiallydesigned for joining the 40 web of a replacement web roll to the runningweb of an expiring web roll without interfering with the operation.Parts of the web supply mechanism shown in Figures 1 and 4 aresubstantially identical and the same reference chart5 acters will beused for like parts to facilitate the description thereof.

A reel II is provided which is rotatably mounted to a frame part I: ofthe machine. The reel may be rotated by power means (not shown) or 50otherwise, as desired, to position the web rolls. consisting of anexpiring web roll IS, a replacement web roll I4, and another roll ll,supported on reel arms I, H and I8 respectively, in web joiningposition, as shown. A belt IO, 55

reeved over a plurality of pulleys 2|, 22, and 23, and adapted to engagethe replacement web roll I4, is driven by rotating pulley 2| through itsshaft 24, which is in driving connection with the drive of the machine,as will be hereinafter described, and is journaledl in brackets 25,supported from a frame part of the machine. The belt l9, by engagementwith the roll |4, when the sameis moved into such position by rotationof the reel brings the speed of the roll substantially into synchronismwith the speed of the machine, and with the speed of the running web 26,leading from the expiring web roll |3. Preferably the belt I8 is drivenat such speed as to impose a slight drag on the roll M.

The web joining mechanism, herein illustrated, is adapted to press therunning web 26 against the web of the replacement web roll |4 to causeand adhesive covered area 21 (Figure 5), on the web of the roll I4, toadhere thereto and then to sever the web 26 as soon as the join is made.The web pressing or deflecting member may be in the form of a brush 28,secured to a bar 29, extending between a pair of arms 3| pivoted at 32to an extension 33, of the bracket 25. The web severing member may be aretractable knife, mounted in a holder 34, extending between arms 35,which arealso pivoted to the extension 33 at 32. The arms 3| and'35 areheld together by a catch 36, pivoted to the arm 35 and engaging a.

pin 31 on the arm 3|. The catch 36 is released from such engagement byenergization of a solenoid 38, mounted on the arm 35. Energization ofthe solenoid 38 actuates a plunger 39 secured to the catch 36 to rockthe same. A spring 4| secured to the arm 35 biases the connected arms 3|and 35 into the web engaging positionas shown. A cable 42, connected atone end to the arm 3| is provided, whereby the web deflector brush 28may be pulled against theweb 26 to deflect the same against the roll l4,when the arm 3| is released from the arm 35 by actuation of the catch36. The other end of the cable 42 is connected to a lever arm 43 whichis rocked by a manipulating lever 44. Associated with the lever 44 is acircuit closing switch 45, which may be operated to close a circuit whenit is desired to make a web join.

A cam46 is provided and secured upon a spindle supporting the roll H.The cam 46 has a cam surface 41 thereon adapted to engage the switch armof a circuit closing switch 48, mounted on the reel arm II. This cam isarranged on the roll shaft, and the cam surface 41 thereof is adapted totime the operation of closing the switch 48, to insure that the adhesivecovered area 21 on the web of the replacement roll H has passed the webdeflecting brush 28 before the switch 48 is so operated. Conductors 49and 5| from. the switch 48 are respectively connected to rings 52 and53, mounted to rotate with the reel Collector brushes 54 and 55electrically connect conductors 56 and 51 respectively to the rings 52and 53. The conductor 56 is connected to a main power supply wire 59 andthe conductor 51 is connected to the solenoid 38. The other power supplywire 68 is connected by a conductor 58 to a terminal of the switch 45,the other terminal of which is connected to the solenoid 38 by aconductor 6|. The catch 36 is operated to release the brush 28 due tothe energization of the solenoid 38 when the switch 45 is closed bymanual operation of the lever 44, and the switch 48 isclosed by theaction of the cam surface 41 on the switch arm, whereby a web join maybe made between the web 28 and the web of the replacement roll l4.

It is thought that the disclosure in the drawings and the foregoingdescription of the arrangement for timing the release of the pastingbrush with respect to the rotation of the roll is suflicient for a fullunderstanding of their operation as applied to the present invention,but a more detailed description of these parts and their operation willbe found in the specification of Patent No. 2,182,760, granted December5, 1939.

In the patent specification referred to, means are shown for selectivelyconnecting the several switches 48 into circuit as the reel is rotated,and also the mechanism and method of operation of the severing device 34which severe a web after the web Join is made.

The means for indicating to the operator that the printed impressions onthe web of the replacementweb roll |4 are substantially in register withsimilar printed impressions on the web 26 of the expiring web roll |3 inaccordance with the form shown in Figure 1, comprises a photo-cell orelectric eye 62 mounted to focus upon a printed or otherwise appliedmark 63, disposed upon the web 26 at a predetermined point in relationto the printed impression thereon, and a photo-cell or electric eye 64mounted to focusupon a similar mark 65 disposed upon the web of thereplacement web roll H at a point corresponding to the position of themark 83 on the web 26, in relation to the printed impression thereon. Abeam of light from each of lamps 66 and 81, respectively associated withthe eyes 62 and 64, cause the latter to close circuits 68 and 63respectively, when the respective marks 63 and 65' are in position toeffect the eyes 62 and 64 either by interruption of the reflection ofthe beam of light, or due to the reflection of the same, depending uponthe preferred arrangement desired. Closing of either circuit 68 or 69will energize, and thereby light, either of a pair of indicating lampsII and 12 respectively. The lamps 1| and 12 are disposed in a positionconveniently visible to the operator, who is positioned to readilyoperate the web joining mechanism by actuation of the lever 44.

Referring to the circuit diagram shown, in connection with the mechanismillustrated in Figure 1, and diagrammatically in Figure 3, the lamps 66and 61 are herein shown energized by connection through a switch I3 withthe power circuit wires 59 and 68. The switch 13 is provided with anoperating lever 14 which is arranged to be actuated by a cam 15 disposedon the arm 35, to close the circuit, when the arm is moved into the webpre-joining position as shown, to illuminate the marks 63 and 85. Eachof the photo-cells 62 and 64 is operably connected through suitablerelays disposed in casings I6 and 11 respectively to cause illuminationof the lamps 1| and I2 whenever the respective photo-cell is influencedby the passing of a mark past the beam of light from the respectivelamps 66 and 61.

Where required, a separate source of power may be supplied to thephoto-cell circuit from power wires 18 and 19 through a transformer 8|.The lamps H and 12 receive their energizing electrical current in thisinstance from the power supply wires 59 and 68 through time delay relays82 and 83 in the casings 16 and 11 respectively, and which are operatedby the actuation of relays 84 and 85 respectively by the photo-cells 62and 63. Whenever the conditions are such that the lamps II and I2 flashin unison, thus indieating that'the register marks are in register, theoperator by manual actuation of the switch 45 closes the circuit of thesolenoid 38 to release the catch 36, permitting operation of the brush28 by the lever 44 to deflect the web 26 against the roll and cause thejoining of its web, with web 26.

In the form shown in Figure 4, the cam 9| corresponding in most respectswith the previously described cam 46, is rotatably adjustable withrespect to the roll I4 and is provided with an indicating pointer 92. Inthis instance, the roll -I4 is prepared by forming the web end 93andapplying the adhesive covered area 21 thereon at an indicating mark94 corresponding to 'an indicating mark on the web 26. The indicatingpointer 92 on the cam 9I is adjusted to align with the mark 94 and isfastened in this position by means of a set screw 96, whereby the camsurface 91, operable to actuate the switch 48,

is in proper timed relation thereto to close the circuit controlledthereby. V

In this form of the'invention, the conductor 56 leading from thecollector brush 54 is connected to the switch I3, through which, whenthe arm 95 is swung down into the web pre-join position, as shown, thecollector brush 54, the switch 46, and the lamp 12 are connected to thepower supply wire 59. By this arrangement, the switch 46 and the lamp I2may be. energized only when the arm 35 is in web pre-join' position, asshown, at which time the switch 13 is closed. I

In this instance, the photo-cell 62 and its associated lamp 66, focusupon the mark 95 and operate the relays in the casing I6 to illuminatelamp II as'in the previously described manner.

The lamp I2, however, is illuminated by being in circuit with the switch48 so that every revolution of the roll I4 will, through theinstrumentality of the cam surface 91, and when the arm 35 is in webpre-join position, flash the lamp I2, thus indicating the passing of themark 94 and the -web end 93, past the brush 28, and in timed relation tothe movement of the web 26, to insure register of the respective marks94 and 95. As in the,previous form, simultaneous flashing of the lampsII and I2 will indicate to the operator that the marks 94 and 95 are inregister and that the web joining mechanism can now be operated as abovedescribed to join the webs.

In association with the above forms of web joining mechanisms, acompensating mechanism is provided whereby non-register of theindicating marks may be corrected by a relative move-' ment of one webin respect to the other, herein accomplished by decelerating oraccelerating the rotative speed of the roll I4. The compensatingmechanism herein shown in Figure 2, is associated with 'the shaft 24 ofthe belt pulley 2| and is disposed between it and the drive from themachine. The shaft 24 has a bevel gear I6I secured upon its end and abevel gear I62 is secured to the end of a shaft I63 connected to adriven member of the machine. A pair of gears I64 and I65 are rotatablymounted within a rotatable ring I66. which in turn is rotatively mountedin a casing I 61 enclosing the gears III and I62 and in which they arejournaled. The ring I66 has worm-wheel teeth I66 formed upon itsperiphery, with which mesh the teeth of a worm I69 secured to the shaftof a reversible electric motor I I I.

The motor III may be provided with an electrically operated brake II2,which is of known form and operates upon the armature shaft of the motorto normally hold it against rotation and, through it, to normallyprevent rotation of the worm-wheel I68 and worm I69, thereby insuringuniform drive of the shaft 24 by the shaft I63 under normal operatingconditions. The release of the brake II2, by meanshereinafter described,will permit the motor III to eifect the rotation of the roll I 4.

A pair of push button switches I I3 and I I4 are provided and disposedconvenient to the operator. The push buttons I I3 and I I4 are connectedwith the power wire 59 through the switch 13 controlled by the cam 75 onthe arm 35, and then to suitable controls disposed'in a box II5, toenergize the same, and other controls disposed in boxes H6 and Ill, torelease the brake H2 and selectively energize the motor III to cause itto rotate as desired.

During normal machine operation, the motor III is not running, beingheldin stopped position bythe brake H2. The belt I9 is normallydriven,through the above described gearing from the machine, at a speedslightly less than the running web 26, to impose a slight drag on theroll I4. when preparing to join the web of a re-printed replacement webroll to the running web 26, it is first necessary to cause the speed ofrotation of the roll I4 to be in synchronism with the speed of therunning web 26. This is accomp'lirhed in the following manner by the useof the motor III.

The arm 35 is swung into web pre-ijoin position, thus closing the switchI3 which,-by a conductor I5I (see Figure 3), is connected to the poweris completed to theother power supply wire 66, to

energize the coil I28. -The energization of the coil I28 actuatesswitches or contactors, which are in the motor circuit, to cause themotor III to run at the proper speed and direction, to drive the beltI9, and by it, the roll I4, in synchronism with the running web 26.

The motor circuit above mentioned includes, a Y

field rheostat H6, the arm of which is connected to the power supplywire 66 by a conductor, I56, and the resistance coil of which is, by acon-- ductor I51, field coil I56, and a conductor I69, connected to theother power supply wire 59, through conductor I5I. The rheostat arm isalso connected by a conductor ISI to a terminal of a switch I21, theother terminal of which is in connection with the conductor I5l by aconductor I62. By this arrangement, the resistance coil of the rheostatH6 is short circuited by the closing of the switch I21, by energizationof the coil I28, to provide a full field for the motor III.

The armature of the motor III is energized by a conductor I63 leadingfrom the power supply wire 66 through a switch I26, closed byenergizetion of the coil I28, through a conductor I64, a

- resistance II9, a conductor I 65 and a conductor I66 connected to onebrush thereof. From the other armature brush, the circuit continuesthrough a conductor I6'I to a switch I25, closed by energization of thecoil I28, and from which a conductor I66 leads to the other power supplywire 59. An armature shunting resistance I26 is connected by theconductor I65 to oneside of the armature, the other side of thearmature, through conductor I61, being connected to a switch I24, closedby energization of the coil I28, from which a conductor I69 connects tothe resistance I28. The coil I28 also actuates a switch I23, which isconnected to the power wire 68 by a conductor HI, and from which aconductor I12 leads to the release coil 01' the brake I22. From thebrake release coil, a. conductor I13 leads to the other power wire 68.The motor I I I is now operating to drive the belt I8 at proper speedand in the proper direction to rotate the roll I4 in synchronism withthe speed of the running web 26.

First assuming that the marks 63 and 65 are not in register, but asindicated by the flashing of the lamp 1I and before the flashing of thelamp 12, the mark 63 on the web 26 is running ahead of the mark 65 onthe roll I4. It is therefore necessary to speed up the roll I4 toregister the marks before the web join can be made. This is accomplishedby closing the push button II4, one contact of which is connected to theswitch 13 by a conductor I14 and through it, by the conductor ii, isconnected to the power wire 69. The other contact of the push button II4 is connected by a conductor I15 to one terminal of a switchcontrolling coil I33, the other terminal of which, is connected by aconductor I16 to the power wire 68.

Energization of coil 33 will open switch I3I, causing thede-energization of the coil I28 by opening the circuit thereof, and willclose a switch I11, one contact of which, by a conductor I18, isconnected to power wire 68, and the other contact of which, by aconductor I19 and the conductor I12, is connected to the release coil ofthe brake I22. De-energization of the coil I26 also opens the switchI21, removing the short circuit of the field rheostat H8 and placing theresistance thereof in circuit with the motor field; opens the switchI25, removing power from the armature through conductor I61; opens theswitch I24, removing the efiect of the armature shunting resistance I28; and opens the switch I28, removing power from the armature throughconductors I63, I64, and I65. The motor III,

'howevenwill continue to run, but at a faster speed, due to the closingof the coil I33. Increase in speed of the motor III will, through thedif ferential gearing in box I81, increase the speed of belt I9 andthrough it, the speed of the roll I4.

As above pointed out, the motor field rheostat H8 is placed in circuitto control the field of motor III by the opening of the switch I21. Thearmature circuit now consists of the conductors I16 leading from powerwire 60 to one contact of a switch I36, the other contact of which isconnected to one side of the armature by a conductor I8I and conductorI66. The other side of the armature is connected by a conductor I82 toone contact or a switch I83, the other contact of which is connected tothe power wire 59 by a conductor I84 and conductor I18.

Should the register mark 63 be'running behind the mark 65, the pushbutton switch I I3 is closed, whereby the rotation of the motor I II isreversed to reduce the speed of the belt I9 through the diilerentialgearing in box I81 as above described. Decrease in the speed of the beltI9 will decrease the speed of roll I4. The reversal of rotation of themotor III is accomplished when the push button switch H3 is closed, byreversing the current through the motor armature in the followingmanner. One contactoi the switch II3 is connected to the power wire 59through the conductor II switch 13, and the conductors I52 and the art.

I14. The other contact of the switch H3 is connected by a conductor I85to one terminal of the switch controlling coil I32, the other terminalof which is connected by the conductor I16 to the power wire 68. Byclosing of switch II3, the coil I32 is energized to actuate the switchescontrolled thereby.

Energization of the coil I32 opens the switch I29, whereby the coil I28is de-energized, thereby opening switches I23, I21, I25, I24, and I26,

causing the opening of the respective circuits controlled thereby. Aswitch I86 has one contact connected to the power wire 60 by a conductorI81. nected by a conductor I88 and the conductor I12 to the release coilof the brake I22, which through the conductor I13 is connected to thepower wire 59. The coil I32, when energized, closes the switch I86 andalso a switch I34, one contact of which is connected by a conductor I81to the power wire 68, the other contact being connected by the conductorI82 to one side of the armature of the motor I I I. The other side ofthe armature is connected by the conductors I66 and I8I to one contactof a switch I9I, the other contact of which is connected to the powerwire 59 by a conductor I92.

The release of either push button H3 or II4,

-after the register mark 65 on the roll I4 has been brought intoregister with the register mark 63 on the web 26, as indicated by thesimultaneous flashing of the lamps 1I and 12, will cause deenergizationof the respective solenoid I32 or I33, closing the respective switch I29or I3I and cutting in the controls in box II6, whereby the motor IIIwill again assume its normal running speed and the roll will be drivenin synchronism with the web 26, permitting the web join to be made whilethe respective marks are in register. After the web join is completed,the arm 35 is moved upwardly away from its web joining position, to theposition indicated in dotted lines in Figure 1, whereby the cam 15releases the lever 14 and the switch 13 is opened to de-energize thesolenoid I28, and therefore the brake H2, and the motor I I I isimmediately stopped by the brake, and maintained thereby, againstrotation. The opening of the switch 13 also de-energizes lamps 66 and61.

While the means provided for indicating the register of impression isillustrated herein as being in a separate electrical circuit from thecontrols of the motor II I and the latter is illustrated as beingmanually controlled by push buttons H3 and H4, it is believed obviousthat those skilled in the electrical art, by the use of known devicesand controls could connect these circuits to cause automatic operationof the motor I I I to accelerate or decelerate the same when suchoperation is required. Such known devices may be contained in a casingI4I into which the terminal leads corresponding to those of the lamps 1Iand 12 and of the push buttons H3 and H4 could be directed for properconnection with the known electrical devices therein as shown in dottedlines in Figure 3.

A diagram of electrical circuits and controls possible to install in thecasing I 4I for use in carrying out the above purpose is shown in Figure3A and are well known by those skilled in Switches 28I and 202corresponding to the push button switches H3 and H4 respectively, areprovided for actuation by solenoids 263 and 204 respectively when thelatter are energized. The solenoids 283 and 204 are respec- The othercontact of switch I86 is contively connected in parallel with the lampsl2 and II so as to be energized therewith. The closing of either switch20! or 202 will effect operation of the motor III as above explained inrespect to the push buttons H3 and ill. Each of the circuits in whichthe respective switches 2M and 202 are disposed is controlled by one orthe other of normally closed switches 205 and 2, which are also actuatedby the solenoid 203 and 2 respectively. The arrangement is such thatwhen either of the switches 2 or 202 is closed by energization of theproper solenoid, the motor Ill operates to rotate in the directiondesired, but, when both are closed, due to the simultaneous energizationof the solenoids upon register of the printed impressions, the motor IIIwill remain inoperative, as the circuit to both motor control switches2M and 202 is opened by the opening of the control switches 2.5 and 20'.I

It will be understood that the invention may be embodied in otherspecific iorms without departing from the spirit or essential attributesthereof, and it is therefore desired that the present embodiment beconsidered in all respects as illustrative and not restrictive, and itwill be further understood that each and every novel ieature andcombination present in or possessed by the mechanism herein disclosedforms a part of the invention included in this application. What -I-claim is: g 1. In a web supply mechanism for a machine adapted tooperate upon a web, the combination of web joining mechanism adapted tobe actuated to join the webs of a rotating replacement roll and of arotating expiring web roll supported by said supply mechanism,both ofsaidwebs having printed impressions thereon, and means to vary therelative speed of said rolls to compensate for variations in register ofthe corresponding printed impressions on the web of the replacement rolland the web running from the expiring web roll, said.

means being controlled by actuation of said web joining mechanism.

'2. In a web supply mechanism for a machine operating upon a web, meansto rotatably sup-' port a replacement web roll adjacent a running web,means to rotate the roll on said supporting means, including means tovary the speed thereof to eilect register of a mark on the web of thereplacement roll with a corresponding mark on the running web to bejoined thereto, means to control said speed varying means and to jointhe webs, and means ail'ected by the relative disposition oi the markson the webs to indicate the condition of register thereof.

8. In a machine adapted to operate upon a web, mechanism for joining apreviously printed running web to a previously printed web of areplacement web roll and to insure register corresponding impressionsthereon, including means to rotate the web roll to move the web thereonat the suriace speed of the running web,

to rotate the web roll to move the web thereon tecting means associatedwith the running web,

a position detecting means associated with the web 01' the replacementweb roll, and means actuated by each of said position detecting means toindicate the relative position of the impressions on said webs.

6. In a machine adapted to operate upon a web, in combination, amechanism for joining a previously printed running web to a previouslyprinted web of a rotating replacement web roll,

and means to insure register of corresponding impressions thereon,including a position detecting means associated with the running web, aposition detecting means associated with the web of the replacement webroll, means to vary the relative movement between the webs to registercorresponding impressions thereon, means actuated by each oi saidposition detecting means to indicate the relative position of theimpressions on said webs, and means actuated by said web joiningmechanism to control said movement varying means.

, '1. In a machine adapted to operate upon a web, in combination, amechanism for joining a previously printed running web to a previouslyprinted web of a rotating replacement web roll, means to insure registerof corresponding impressions thereon, including a position detectingmeans associated with the running web, a position detecting meansassociated with the web of the replacement web roll, means to vary therelative movement between the webs to register corresponding impressionsthereon, means actuated by each oi said position detecting means toindicate the relative position 01' the impressions on said webs, andcommon means actuated by said web Joining mechanism to control saiddetecting means and said movement varying means.

-8. In combination with a web joining mechanism,means to operate saidmechanism to join a previously printed running web with a previouslyprinted web of a rotating replacement web roll, elements operablyail'ected by corresponding marks on the printed webs as they passthereby, means simultaneously actuated by said elements when the printedimpressions on the webs are in register, and means acting upon one ofthe webs to eflect register of the marks on the webs.

9. In combination with a web joining mechanism, means to support areplacement web roll, means to rotate the roll on said support, means torelatively move a running web and the replacement web roll toward eachother and into engagement, means to vary the speed of rotation oi theroll on said support, and means actuated ailfected by the passingthereby of corresponding,

marks respectively disposed on the web of the supported roll and on therunning web, and adapted to be actuated simultaneously when theaforesaid marks are in register, and means for moving one of the websrelatively to the other to compensate for non-register of the marksthereon.

11. In combination, a member adapted to support a rotating web rolladjacent a running web, means to control indicating means and which isaflected by the passing thereby of corresponding marks respectivelydisposed on the roll and on the web, and adapted to be actuatedsimultaneously when the marks are in register, means to rotate the webroll at a peripheral speed substantially equal to the speed of therunning web, and means to actuate said web roll rotating means toaccelerate or retard the speed of the roll to register the aforesaidmarks.

12. In a web supply mechanism, means to rotate a web roll disposedadjacent a running web, means adapted to be actuated to vary therelative lineal speed of the running web in respect to the peripheralspeed of the roll, corresponding marks on the web and on the roll, meansassociated with the web and with the roll and affected by the passing ofthe marks thereon, means actuated by said mark aflected means toindicate the passing of the marks thereby, and means to actuate saidspeed varying means to eflect register said marks.

13. In a web supply mechanism, means to rotate a web roll disposedadjacent a running web, means adapted to be actuated to vary therelative-lineal speed or the running web in respect to the peripheralspeed of the roll, mechanism to join the web on the roll to the runningweb movable from an inoperative position to an operative one,corresponding marks on the web and on the roll, means associatedrespectively with the web and with the roll and affected by the passingof the marks thereon, means actuated by said aflected means toindicatethe passing of the marks thereby, means to actuate said speedvarying means to efl'ect register of said marks, and interlocking meansaffected by movement of said web joining mechanism to prevent operationof the speed varying means when the web joining mechanism is ininoperative position.

14. In a web supply mechanism for a machine adapted to operate upon aweb, the combination of web joining mechanism adapted to be actuated tojoin the web of a rotating replacement web roll having printedimpressions thereon with the web running from an expiring web rollhaving printed impressions thereon, said rolls being supported by saidsupply mechanism, means for visibly indicating the relative position ofthe printed impressions on the webs, and means to actuate saidindicating means.

15. In a web supply mechanism for a machine adapted to operate uponpre-printed webs, the combination of web joining mechanism adapted to beactuated to join webs of a rotating replacement roll and 01' a rotatingexpiring web roll supported by said supply mechanism, both of said webshaving printed impressions thereon, means to visibly indicate therelative position of the printed impressions on the webs, means toactuate said indicating means, and means to vary the relative speed 01'said rolls to compensate for variations in register of the impressions,to permit correction therein before the web join is made.

16. In a web supply mechanism for a machine adapted to operate upon aweb and supporting a rotatable replacement web roll and a rotatableexpiring web roll, each roll having printed impressions thereon, thecombination o1 operable web joining mechanism, visible indicating means,means to actuate said indicating means to cause it to indicate therelative position of the printed impressions on the webs, and means tolineally move the webs relatively to each other to compensate for thevariations in register of the impressions thereon as indicated and tobring them into register before said web joining mechanism is operated.

17. In a web supply mechanism for a machine operating upon a web, asupport for web rolls, means to rotate a replacement web roll on saidsupport, web joining mechanism, means to vary the speed of said web rollrotating means to register a mark on the web of the roll with acorresponding mark on a running web to which it is to be joined, andcommon means to control the operation of said web joining mechanism andthe actuation of said speed varying means.

18. In combination with a web joining mechanism having a web deflectingelement, means to actuate said element to deflect a running web havingmarks thereon against a similarly marked web of a replacement web roll,means to indicate the relative disposition of the marks on the webs, andmeans afiected by the marks on the webs to actuate said indicatingmeans.

19. In combination with a web joining mechanism having a web deflectingelement, means to actuate said element to deflect a running web havingmarks thereon'against a similarly marked web of a replacement web roll,means to indicate the relative disposition of the'marks on the webs,means afiected by the marks on the webs to actuate said indicatingmeans, and means to lineally move one web relatively to the other tocause the marks to register.

20. In a web supply mechanism for a machine operating upon a web, meansto rotatably support a web roll, means to rotate the roll on saidsupporting means, including means to vary the speed of rotation thereofto efiect register of a mark on the web of the roll with a correspondingmark on a running web to be joined thereto, means to indicate theposition of the mark on one web relatively to the mark on the other,means affected by the marks on the webs to simultaneously actuate saidindicating means when the marks are in register, and means to join thewebs.

21. In a roll changing mechanism for a machine adapted to operate'on apreviously printed web drawn from a web roll, and having means torotatably support a replacement web roll having register imprintsthereon, and a running roll from which a web also having registerimprints thereon is led adjacent to the replacement roll and thence tothe machine, means to accelerate the replacement roll to substantiallythe speed oi. the running web and to efiect a change in the speed of thereplacement roll relative to the running web, to bring a registerimprint on the web of the replacement roll opposite a register imprinton the running web, photo-electric devices positioned with respect tothe running web and the replacement web roll and actuated by passage ofthe register imprints, and means operable to press the webs together,whereby they may be joined with their register imprints juxtaposed.

22. In a roll changing mechanism for a machine adapted to operate on apreviously printed web drawn from a web roll, and having ni ans torotatably support a replacement web roll register imprints thereon, anda running roll from which a web also having register imprints thereon isled adjacent to the replacement roll and thence to the machine, means toaccelerate the replacement roll to substantially the speed of therunning web and to effect a change in the speed of the replacement rollrelative to the run- 10 ning web, to bring a register imprint on the webaving of the replacement roll opposite a register imprint on the runningweb, a photo-electric device positioned with respect to the running weband actuated by passage of register imprints thereon,

a timing switch operated in synchronism with 5 the movement of aregister imprint on the replacement roll, and means operable to pressthe webs together, whereby they may be joined with their registerimprints juxtaposed.

- ALBERT J. HORTON.

